Looking through all of the other zone files for the UK, I couldn't find one that looked like it made much sense. So I came up with the brilliant idea of writing one of my own. Hope you like it. It took me a whopping 30 minutes of research and 2 hours of typing, cutting, and pasting from places that actually know where the post in the UK is going, rather than simply the common name for it. Many other packages were either outdated or were missing minor areas... such as London.
This file includes zone information for England, North Ireland, Scotland, Wales, and the Channel Islands, and the Offshore Dependencies. If there are any errors in it, blame me. I didn't check for them. Better yet, correct them and add your file to this contrib. Enjoy!